@book{71572,
	author = {Helmer, Richard, and United Nations Environment Programme.},
	title = {Water pollution control},
	publisher = {E & FN Spon,},
	year = {1997.},
	address = {London ;},
	edition = {1st ed.},
	note = {"Published on behalf of UNEP, United Nations Environment Program, Water Supply & Sanitation Collaborative Council, World Health Organization."},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10057296}
}